geode
— Noun
– English
~ (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals
geodesic
— Adjective
– English
~ of or relating to or determined by geodesy
geodesic
— Noun
– English
~ (mathematics) the shortest line between two points on a mathematically defined surface (as a straight line on a plane or an arc of a great circle on a sphere)
geodesic dome
— Noun
– English
~ a lightweight dome constructed of interlocking polygons; invented by R. Buckminster Fuller